00369nam a2200133Ia 45000030006000000080041000060400015000471000015000622450105000772500015001822600009001975460012002060050017002180STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aCasey John  aFirst six books of the elements of Eclids and propositions I-XXI of book XI and an appendix on the c  aEighteenth  c1907  aEnglish20220125170012.0